QA1 Coilover Kit

Additional Information

QA1 RCK52409 Pro Coil Rear Coilover Kit, 79-04 Mustang, Drag, 95 lb. Springs, MOD Series Shocks

Part Type

Coilover Set

Product Overview

Product Overview Improve your Mustang's suspension with QA1's bolt-in rear coil-over conversion kit. This kit includes specially designed mounting brackets, adjustable aluminum shocks, springs, and all necessary hardware. Ride Height Adjustability We understand that achieving the perfect stance for your car can be a challenge. That's why we've created a solution that makes it easy to adjust your ride height. QA1 coilovers feature a fully threaded, aluminum body which allows up-to 2 of lowering from stock. MOD Series Coil-Overs Take total control of your race car suspension with 4-way adjustable valving offering independent tunability of both high and low speed compression and rebound. These shocks offer the most versatile package for ultimate performance in any application. When you are making no compromises, the MOD series coilover is the shock for you. Easy, Bolt-In Installation Our commitment to thoughtful product design is evident in every product we produce, to deliver the highest level of performance, while ensuring trouble-free compatibility. Made in the USA QA1 coilovers are proudly made in Lakeville, Minnesota. Fitment Notes Does not fit Cobra IRS

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	qapDK43-FMM1	QA1 79-86 Ford Mustang Level 3 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX104M, 1x qapMUK01, 1x qapT121W, 1x qapHD01-14150, 1x qapRCK52409, 1x qap52540)
	qapDK43-FMM2	QA1 87-89 Ford Mustang Level 3 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX102, 1x qapMUK02, 1x qapT121W, 1x qapHD01-14150, 1x qapRCK52409, 1x qap52540)
	qapDK43-FMM3	QA1 90-93 Ford Mustang Level 3 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX102, 1x qapMUK02, 1x qapT121W, 1x qapHD02-14150, 1x qapRCK52409, 1x qap52540)
	qapDK43-FMM4	QA1 94-04 Ford Mustang Level 3 Drag Kit w/ Shocks (1x qap5221, 1x qap5255, 1x qap52885, 1x qapBAX104, 1x qapMUK02, 1x qapT121W, 1x qapHD03-14150, 1x qapRCK52409, 1x qap52541)

• Adjustable shock valving options for all driving styles
• Best-in-class warranty
• Easy bolt-in install
• Made in the USA
• QA1 uniquely engineered to enhance the performance of your vehicle
• Ride height adjustability

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Coilover Kits, MOD Series Pro Coilover Systems, Rear, Twin-tube Shocks, Eyelet Mounts, 95 lbs./in. Spring Rate, Ford, Kit

Don't be limited to adjustments! Completely re-valve in minutes with the QA1 MOD Series Pro coilover systems. Designed specifically to meet the demands required by today's high performance drag race and handling/pro-touring cars, QA1's multi-patent-pending MOD Series shocks will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve packs that can easily be swapped out, all while the shocks remain on the car. An industry first, MOD Series shocks can easily be re-valved without interrupting the oil path or opening up the shock for debris and air contamination. Medium compression and rebound valve packs come standard; soft or firm compression and rebound valve packs are also available.

Once the desired valving is in place, the unique double-adjustable design (with adjustable low-speed bleed) allows for fully independent control over the compression and rebound characteristics. With all these adjustability options, MOD Series shocks achieve an expansive force curve capability and an unprecedented level of tunability. The shocks also feature mounting adjustability to accommodate a variety of vehicles and mounting configurations. The nitrogen-charged canister is available in a piggyback or remote configuration for ease of installation in tight areas, and the base eyelet is indexable, so you can unbolt and reattach it at the angle you need for the best shock and canister placement. Like all QA1 shocks, MOD Series coilovers are 100 percent dyno-tested and serialized. Order the kit recommended for your vehicle.